国产萌白酱网站在线观看_91麻豆国产免费观看_一级特黄性色生活毛片_精品国产色欲av无码久久久_免费无遮挡无码视频在线看_色的无极亚洲影院首页_抽、插免费观看久久av网_高清破外女出血av毛片_最近免费高清日本_99精品热在线观看色网手机版

Shandong Jindun New Material Technology Co.,Ltd.  is a professional manufacturer of continuous cast steel aluminum carbon, aluminum zirconium carbon refractory and graphite crucible.On the basis of the continuous casting of three large pieces and the introduction of domestic and foreign advanced cold isostatic pressure technology to produce silicon carbide graphite crucible, silicon carbide and silicon nitride combined compound crucible, this crucible has the advantages of long life, fast heat conduction, cost-effective than traditional crucible 3-5 times!